The Secrets of Digital Worlds
Go beyond the basics of coding to discover the clever tricks and psychological hacks that make games feel alive. Learn how developers manipulate light, space, and player behavior to create unforgettable experiences.
Like Duolingo, but for The Secrets of Digital Worlds. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
A short one: 30 levels across 3 sections, about 60 minutes end to end, roughly 12 days at five minutes a day. It moves through Master the Feel of the Game, Tricks of the Digital Eye, and The Logic Behind the Curtain. It assumes you already know the basics.
Free forever · No credit card · iPhone & Android
Key ideas in The Secrets of Digital Worlds
- Human reaction time and visual processing have a slight delay
- Players perceive themselves as being on the ledge even after the hitbox clears it
- Coyote time handles late jumps after leaving a platform
- Input buffering handles early presses before an action is possible
- Why strict physical accuracy often results in a negative player experience
- Matching the specific 'forgiveness' mechanic to the player's input error
- Zero frames of grace requires frame-perfect precision
- A long grace period makes the character feel like they are walking on air
- Matching forgiveness mechanics to input errors
- The tradeoff involved in deciding the length of the grace period
- A brief freeze on the frame of impact emphasizes the force of the hit.
- A quick flash of white or bright color signals a sudden release of energy.
- Keeping the shake duration very short prevents the player's eyes from losing focus.
- Using a random offset rather than a wide rhythmic sway reduces motion sickness.
- Instant impact before recovery
- Slower decay than jolt
You've tried the other tabs
Thirty open tabs. Four facts you actually kept.
You watched. You nodded. By Sunday it was gone.
One answer, then back to scrolling.
Eight weeks. You meant to finish. You didn't.
Tomo gives The Secrets of Digital Worlds the Duolingo treatment: levels, streaks, and quick quizzes that test what you just learned. That game loop is what the tabs above never had, so it's the one you actually finish.
Here's what playing it feels like
A real question from this course. Take your best guess.
When a character's feet just barely leave a ledge, where does the player usually think they are?
Get it right to open this lesson and 29 more in the app.
Where The Secrets of Digital Worlds takes you
- 1
Master the Feel of the Game
- The Art of 'Coyote Time' and Input Buffering
- Screen Shake and Visual Juice
- Soundscapes That Guide the Player
- Making Movement Feel Weighty
- The Secret Math of Aim Assist
- 2
Tricks of the Digital Eye
- Skyboxes: Painting the Infinite
- Level Design Using Leading Lines
- The Magic of Forced Perspective
- Using Color to Signal Danger and Safety
- 3
The Logic Behind the Curtain
- How Games Hide Loading Screens
- Procedural Generation: Creating Infinite Variety
- The 'Director' AI That Controls Tension
- Hitboxes vs. Hurtboxes: Defining Physicality
- Why Glitches Become Features
- Optimizing Performance Without Losing Detail
3 sections · 15 units · 30 levels. Built to play, not to enroll.
You pick the voice
The Secrets of Digital Worlds is taught in the Explain Like I'm 5 style: no big words. promise.. Want a different feel? In the app you can spin up the same topic in any of Tomo's teaching styles. Same facts, totally different vibe.
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Start The Secrets of Digital Worlds today.
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